Turn any idea into a graph you can explore.
An open-source tool from HYPRGRPH · more tools
Type a concept, a question or a process, or drop in a document. Graphinator maps it with Claude, lays it out, and lets you keep going from any node: expand it, ask for an explanation, edit it, or tell the whole graph how to change.
| Kind | Good for |
|---|---|
| Concept map | Ideas and how they relate, with cross-links |
| Mind map | One central idea branching outward |
| Flowchart | A process, step by step |
| Decision tree | Questions that branch into outcomes |
| Timeline | Events in order |
Any graph can be re-laid out as any other kind with one click.
- Expand a node to grow 3 to 6 new ideas from it, optionally toward a direction you type.
- Explain a node for two short paragraphs on what it is and how it connects.
- Change the whole graph in plain words: "add the economics", "make it simpler", "split the history branch by decade".
- Click a group in the legend to isolate it. Drag between nodes to connect them. Delete removes the selected node.
- Every graph is saved to the Library on this computer.
- Export to PNG, SVG, a Markdown outline, Mermaid (pastes into GitHub and Notion), or a Graphinator file you can open again.
git clone https://github.com/wexloops/graphinator-v01.git graphinator
cd graphinator
npm install
npm run dev # http://localhost:3012Click API key in the top bar and paste your Anthropic key. Graphinator checks it with Anthropic and saves it to .env in this folder. You can also put ANTHROPIC_API_KEY=... in .env yourself (see .env.example); the app's .env takes priority over a key exported in your shell.
npm run build && npm start serves the production build on the same port. See an example on the start screen works without a key.
The key is read by the local server only and is never sent to the browser. Key changes are accepted only from localhost. Graphinator uses claude-opus-5-5 by default; set GRAPHINATOR_MODEL in .env to use another model. Requests use structured outputs, so every reply is a valid graph.
React, React Flow, ELK for layout, the Anthropic TypeScript SDK, Zod, Vite. npm test runs the layout, schema and export tests.
Version 3 replaces both Graphinator v1 (flowcharts from prompts) and Graphinator Pro (AI media workflows). It keeps one job, mapping ideas, and does it properly. The earlier code is in this repository's history.
MIT License.
HYPRGRPH
Graphinator is one of the tools HYPRGRPH builds for its own work and shares openly. See the rest at hyprgrph.xyz.